Wavelet Analysis of the Interconnection between Atmospheric Aerosol Types and Direct Irradiation over Cameroon

Figure 4

Continuous Morlet wavelet spectrum (CWS) of the five types of aerosols over the 9 selected zones on a monthly scale during 2005–2019. The thick black contours are the confidence level of local power relative (significant periodicities are enclosed in that thick black contour line). The black line is the cone of influence beyond which the energy is affected by the zero-padding effect.